diff options
| author | Ye Li <ye.li@nxp.com> | 2018-04-16 00:30:29 -0700 |
|---|---|---|
| committer | Ye Li <ye.li@nxp.com> | 2018-04-27 02:32:23 -0700 |
| commit | 75cdc9b6a476f3cef9e49d02873b9244ceb447c8 (patch) | |
| tree | bdac2cc0c801991df8cfe2ff41ee56e400a88722 /arch/arm/mach-imx/imx8/cpu.c | |
| parent | 3caa05e6dc973b8710642f27f834bf022fbb65b4 (diff) | |
MLK-16560-2: imx8: Use fsl,sc_rsrc_id binding to map device to rsrc
Using the SMMU for some devices (like dpu) requires a streamid to be
assigned to multiple resources.
Determining the resource ids for a device is a problem that occurs in
multiple contexts. So far uboot deals with this by parsing the
power-domain node which is insufficient here.
Add a new devicetree property called fsl,sc_rsrc_id which lists the
resource ids associated by a certain device.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch/arm/mach-imx/imx8/cpu.c')
| -rw-r--r-- | arch/arm/mach-imx/imx8/cpu.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c index cff138a2d3..6b374caad1 100644 --- a/arch/arm/mach-imx/imx8/cpu.c +++ b/arch/arm/mach-imx/imx8/cpu.c @@ -856,8 +856,23 @@ static int config_smmu_resource_sid(int rsrc, int sid) static int config_smmu_fdt_device_sid(void *blob, int device_offset, int sid) { int rsrc; + int proplen; + const fdt32_t *prop; const char *name = fdt_get_name(blob, device_offset, NULL); + prop = fdt_getprop(blob, device_offset, "fsl,sc_rsrc_id", &proplen); + if (prop) { + int i; + + debug("configure node %s sid 0x%x for %d resources\n", + name, sid, (int)(proplen / sizeof(fdt32_t))); + for (i = 0; i < proplen / sizeof(fdt32_t); ++i) { + config_smmu_resource_sid(fdt32_to_cpu(prop[i]), sid); + } + + return 0; + } + rsrc = get_srsc_from_fdt_node_power_domain(blob, device_offset); debug("configure node %s sid 0x%x rsrc=%d\n", name, sid, rsrc); if (rsrc < 0) { |